Home / 8,439.22-12,647.29-3,931.03

Finding the Fourth Proportional to 8,439.22, 12,647.29 and 3,931.03

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Solution

The fourth proportional to 8,439.22, 12,647.29 and 3,931.03 is: 5,891.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.22 : 12,647.29 = 3,931.03 : x
  2. Step 2: Convert to fraction form
    8,439.22/12,647.29 = 3,931.03/x
  3. Step 3: Cross multiply
    8,439.22x = 12,647.29 × 3,931.03
  4. Step 4: Simplify right side
    8,439.22x = 49,716,856.75
  5. Step 5: Solve for x
    x = 49,716,856.75/8,439.22
  6. Step 6: Final answer
    x = 5,891.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.